| /* FPU control word definitions. Stub version. |
| Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and |
| Martin Schwidefsky (schwidefsky@de.ibm.com). |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _FPU_CONTROL_H |
| #define _FPU_CONTROL_H |
| |
| #include <features.h> |
| |
| /* These bits are reserved are not changed. */ |
| #define _FPU_RESERVED 0x0707FFFC |
| |
| /* The fdlibm code requires no interrupts for exceptions. Don't |
| change the rounding mode, it would break long double I/O! */ |
| #define _FPU_DEFAULT 0x00000000 /* Default value. */ |
| |
| /* Type of the control word. */ |
| typedef unsigned int fpu_control_t; |
| |
| /* Macros for accessing the hardware control word. */ |
| #define _FPU_GETCW(cw) __asm__ __volatile__ ("efpc %0,0" : "=d" (cw)) |
| #define _FPU_SETCW(cw) __asm__ __volatile__ ("sfpc %0,0" : : "d" (cw)) |
| |
| /* Default control word set at startup. */ |
| extern fpu_control_t __fpu_control; |
| |
| #endif /* _FPU_CONTROL_H */ |
